Social Login Common :

Using this module you can easily implement social logins, such as facebook,google plus.

 

How to Use :

Step 1 : Create your app from facebook developer site.

Step 2 : Generate key hash :

for generating key hash for facebook app register, use following code :

try {
    PackageInfo info = getPackageManager().getPackageInfo(
            "com.app.sociallogincommon",
            PackageManager.GET_SIGNATURES);
    for (Signature signature : info.signatures) {
        MessageDigest md = MessageDigest.getInstance("SHA");
        md.update(signature.toByteArray());
        Log.e("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
    }
} catch (PackageManager.NameNotFoundException e) {
    e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
    e.printStackTrace();
}

Note : replace "com.app.sociallogincommon" to your project package.

Import module "sociallogin" into your project.

Step 2 : goto->sociallogin->src->main->res->values->strings.xml

Change "facebook_app_id" with your project app id from facebook developer site.

<string name="facebook_app_id">185710478622729</string> change this.

Step 3 : Init CallbackManager

private CallbackManager callbackmanager;

in onCreate method: 

callbackmanager = CallbackManager.Factory.create();

Step 4 : Get Response

Add following code in onCreate() : 

SocialLoginResult loginResult = new SocialLoginResult() {
    @Override
    public void onSuccess(SocialLoginItems loginItems) {
        txtView.setText(loginItems.getStrFirstName());
        Log.e(TAG, "onSuccess: loginItems : fname : " + loginItems.getStrFirstName());
    }
};

socialLogin = new SocialLogin(this, loginResult);
socialLogin.facebookLogin();

Step 5: Send Callback to module 

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    callbackmanager.onActivityResult(requestCode, resultCode, data);
    socialLogin.getCallback().onActivityResult(requestCode, resultCode, data);
}

That's it....Just run the project and enjoy....:)